Tantalum

Tantalum (Ta) is a refractory metal.  Tantalum is quite soft compared to tungsten or even molybdenum.  The density and melting point of tantalum lies between that of tungsten and molybdenum.

Tantalum is often used in capacitors or other electronic devices and is often also used to alloy other metals. Its high corrosion resistance is useful in chemical reaction pipes and vessels such as vacuum furnaces and nuclear reactors, allowing corrosion-resistant properties at high temperatures while minimizing product contamination. Its high thermal conductivity is useful in equipment such as heat exchangers and distillation equipment.

We offer the following grades, to ASTM B708:

  • R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both,
  • R05400, unalloyed tantalum, powder-metallurgy consolidation,
  • R05255, tantalum alloy, 90 % tantalum, 10 % tungsten, electron-beam furnace of vacuum-arc melt, or both,
  • R05252, tantalum alloy, 97.5 % tantalum, 2.5 % tungsten, electron-beam furnace or vacuum-arc melt, or both, and
  • R05240, tantalum alloy, 60 % tantalum, 40 % niobium, electron-beam furnace or vacuum-arc melt.

Midwest Tungsten stocks and can also provide custom sizes of ≥99.95% pure tantalum as well as 99.99% min pure tantalum in ingot, rod, bar, wire, tube, crucible, plate, target, sheet and foil form.

Available Tantalum Sheet, Tantalum Strip, & Tantalum Foil (ASTM B708) Sizes:

Thickness Width Length
.001″ – .003″ 1″ – 8″ >2″
.003″ – .020″ 1″ – 28″ 1″-80″
.020″ – .400″ 2″ – 40″ 2″ – 120″

Available Tantalum Tube (ASTM B521) Sizes:

Diameter Wall Thickness Length
.040″ – 6″ .008″ – .200″ 4″ – 40 ft

Available Circular Tantalum Target Sizes:

Diameter Thickness
.600″ – 16″ .120″ x 1.100″

Available Sheet/Plate Tantalum Target Sizes:

Thickness Width Length
.040″ – 1.6″ <40″ <120″

Available Tantalum Wire & Tantalum Rod (ASTM B365) Sizes:

Diameter Total Length
.010″ – 4.75″ Per customer request

MTS can also custom machine tantalum finished parts according to your specifications.

We also manufacture vacuum evaporation boats from tantalum. View our online catalog of evaporation boats.

Have a question?

Feel free to send us a message, or give us a call, 1-800-626-0226 or 1-630-325-1001.

We look forward to the opportunity to serve you!